<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
        <el-row>
            <el-col>
                <el-button type="primary">添加角色</el-button>
            </el-col>
        </el-row>
      <el-table :data="rolesList" border stripe style="width: 100%">
        <el-table-column type="expand">
            <template slot-scope="scope">
                <el-row v-for="(item1, i1) in scope.row.children" :key="item1.id" :class="['bdbottom',i1 ===0 ? 'bdtop' : '', 'vcenter']" >
                    <el-col :span="5" >
                        <el-tag> {{item1.authName}}</el-tag>
                        <i class="el-icon-caret-right"></i>
                    </el-col>
                    <el-col :span="19">
                        <el-row :class="[i2 ===0 ? '' : 'bdtop', 'vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                            <el-col :span="6">
                                <el-tag type="success"> {{item2.authName}}</el-tag>
                                <i class="el-icon-caret-right"></i>
                            </el-col>
                            <el-col :span="18">
                                <el-tag closable v-for="(item3, i3) in item2.children" :key="item3.id" @close="removeRightById(scope.row, item3.id)" >
                                    {{item3.authName}}
                                </el-tag>
                            </el-col>
                        </el-row>
                    </el-col>
                </el-row>

            </template>
        </el-table-column>
        <el-table-column type="index" width="50" label="#"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300">
            <template slot-scope="scope">
                <el-button type="primary" icon="el-icon-edit" size="mini" >编辑</el-button>
                <el-button type="danger" icon="el-icon-delete" size="mini" >删除</el-button>
                <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
        </el-table-column>
      </el-table>
    </el-card>

    <el-dialog title="分配权限" :visible.sync="setRightDialogVisible" width="50%" @close="setRightDiaClosed">
        <el-tree :data="rightsList" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>
        <span slot="footer" class="dialog-footer">
            <el-button @click="setRightDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="allotRights">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      rolesList: [],
      setRightDialogVisible: false,
      rightsList: [],
      treeProps: {
          label: 'authName',
          children: 'children'
      },
      defKeys:[],
      roleId: ''
    }
  },
  created() {
    this.getRolesList()
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get('roles')
    //   console.log(res)
      if (res.meta.status !== 200) return this.$message.error('请求数据失败')
      this.rolesList = res.data
      console.log(this.RolesList)
    },
    async removeRightById(role,rightId){
        const confirmresult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err =>{
          err
        })

        if (confirmresult !== 'confirm') {return this.$message('已经取消了删除!') }

        const {data: res} = await this.$http.delete(`roles/${role.id}/rights/${rightId}`)

        if (res.meta.status !== 200) return this.$message.error('取消权限失败')
        this.$message.success('取消权限成功')
        this.getRolesList()       
    },
    
    async showSetRightDialog(role){
        this.roleId = role.id
        const {data: res} = await this.$http.get('rights/tree')      
        this.rightsList = res.data
        // console.log(this.rightsList)
        if (res.meta.status !== 200) return this.$message.error('获取权限数据失败')
        this.getLeafKeys(role,this.defKeys)
        this.setRightDialogVisible = true
    },
    getLeafKeys(node, arr){

        if (!node.children) {
            return arr.push(node.id)
        }
        node.children.forEach(item => 
          this.getLeafKeys(item, arr))
        
    },
    setRightDiaClosed(){
      this.defKeys = []
    },
    async allotRights(){
      const keys= [
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]

       const idStr = keys.join(',')

      const {data: res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
      if (res.meta.status !== 200) return this.$message.error('分配权限失败')
      this.$message.success('分配权限成功')
      this.getRolesList()
      this.setRightDialogVisible =false
    }
}
}
</script>


<style lang="less" scoped>
.el-tag{
    margin: 7px;
}
.bdtop{
    border-top: 1px solid #eee;
}
.bdbottom{
    border-bottom: 1px solid #eee;
}
.vcenter{
    display: flex;
    align-items: center;
}
</style>
